Amazon is ending all inventory commingling as of March 31, 2026

Amazon has them for $30, but has none of the legitimate item which are only sold through a dealer network and dealers charge the OEM price of $285 bucks plus shipping. It’s not quite the same part – cause dealers only sell a larger unit that includes the heater - you can’t buy the actual part number except via a knockoff.

Add to this that the Jacuzzi part - for my model at least - has a reputation of just dying at two years plus one day, while the Chinese parts frequently last 3-5 years.

In the end, you save yourself quite a lot of money, and time by replacing less frequently, by buying the knock off. And where I live, you couldn’t get the knock off otherwise.

The important thing of course is to know that you’re getting a knock off, and have made that choice in intentionally. Your story does suck - and there can be lots of reasons both good and bad to make a knock off.

I once had a fleet of HP servers that had storage parts constantly failing. HP techs couldn't do anything useful about it, they just kept replacing the parts with authentic HP replacements.

Then HP ran out of the parts, probably due to the failure rates. Out of desperation we bought some cheap knockoffs to keep things running until the HP parts came back into stock. Those cheap knockoffs worked perfectly and were reliable, zero issues. Much better than the HP parts. We ended up buying enough of those parts to replace all the HP parts.

Many times the expensive official parts are literally the cheap knockoffs with more steps. And sometimes high-quality knockoffs are competing with the low-quality branded versions.

There would be enormous value in being able to trace the true provenance and supply chain for everything you can buy. It would be extremely challenging due to the incentives to misrepresent this information.

The title is not misleading in this case - it's how you discover the item to being with, but if the description says "Samsung" as manufacturer I'd send it back.

There are certain times you want an OEM part for good reason (e.g. safety critical/expensive items) but most of the time aftermarket is perfectly fine and sometimes even desirable. Most wear items in cheap appliances and the like are made in china anyways and typically are low quality to start with.

This one bit me recently when I bought a package of budget light fixtures (in Canada, from amazon.ca) and then my licensed electrician informed me that he wouldn't be able to install them as they didn't have a CSA or UL mark. (edit: originally I had mis-recalled and said CE here)

To their credit, Amazon did allow me to return them without penalty, and now my review there warns other consumers that those are only for DIY use and even then you are risking your home's insurance coverage.

That is assuming the component is even available locally or from a responsible seller. I live in a small city (half a million people). It is often impossible to find parts locally even for popular products that were purchased locally. Then there are parts where it is impossible to find official replacements, either because it is outside of the product's support windows, or because the replacement parts were never available to start with.

Amazon is essentially a logistics company with a search engine. It doesn't really make sense to have them enforce regulations or counterfeiting rules than it would to make UPS and google. It's not like they hide who the seller is on any item (it's listed as sold by).

What your complaining about is a fundamental consequence of anything that lowers the barriers to selling goods. You once needed to buy a storefront to sell retail goods, later you at least needed sufficient name recognition for people to visit your website -- that investment gave anyone whose goods were counterfeit as well as regulators assets to seize.

But just like making it easy for every citizen to publish their thoughts means we see lots of hate and dumb shit online -- anything that lowers the barriers to selling retail goods (in general a good thing) will make it easy to sell counterfeit or defective crap.

In the long run, I suspect tech will make reputable 3rd party evaluations easier to access but let's not blame Amazon for not becoming an arm of the state and judging what is and isn't legal.

First, I'm not sure it ever started. Second, this article is about moving towards honesty.

In "non-secular times" people as a whole were far less mobile, so they grew up and built connections around the same people, and any connections to the wider world were very low-bandwidth if they existed at all. So they trusted the people they were near because they were around them constantly, and also tended to resist change.

I think you are conflating religious values with how things were when people mostly lived among the same people for most of their lives and didn't have modern communication methods that brought the whole world (or an appearance thereof which is what modern social media is) to their face.

Signed, someone who has received a counterfeit Canon DSLR camera battery, fridge water filter, and "official" Nintendo Switch case from Amazon. (Albeit some years back for all of them, as I rarely buy there any longer.)

A few years ago, most stuff was 2-day. Now most stuff is 1-day. And it's constantly popping up options for same-day too.

My first job out of college in 2013 was working at Amazon on one of the teams that was implementing inventory commingling at the warehouse level, and my first big project was implementing this process into the receiving software, which is when inventory arrives at warehouses from vendor/seller trucks and employees scan everything to make database records that lead to paying for the goods. Note: in Amazon lingo "vendor" means a provider of goods that are legally purchased and owned by Amazon in the warehouse, while "sellers" are FBA sellers that maintain ownership of their goods and basically rent Amazon's warehouse services.

The big software undertaking was determining, at inventory receive time, whether we trusted the seller enough to allow their inventory to be commingled with others. If yes we would be "virtually track" the provenance: store in the database a record of the vendor, but if the item became commingled (according to UPC scans as it moves around the warehouse) with other sellers' inventory, blur the information so as to not falsely attribute provenance when it was no longer known. The whole project was based off the cost:benefit analysis that the efficiency and customer experience benefits outweighed the cost of not being able to attribute damage to the correct vendors (particularly the fact that you could ship a customer a product from the closest warehouse that it had it, instead of transshipping it from the warehouse that had the one owned by the person they bought it from).

In cases where sellers were not trusted enough to commingle there were alternate processes that were supposed to track their items individually; the most granular was "LPN" receive, license-plate-number, where every product got an individual UPC to distinguish it from all others. This was borrowed from Zappos, whose one warehouse in Vegas was initially the only one who used this process; I was told that was because the online shoe business heavily relied on letting customers do loads of returns and so it was implemented out of necessity early on. One of our projects was rolling LPN out to more of the North American network. But it was a lot more expensive (in the stickers, labor, data management, and picking inefficiency) so it was dispreferred whenever possible.

At the time the whole commingling initiative was regarded to be a big win for both Amazon and customers. It was fairly janky from the beginning, though, and I'm not at all surprised that sellers (and to a lesser extent vendors) began taking advantage of it as soon as they began to realize how it worked. There were a lot of initiatives around the time I left to provide better accountability in the whole process, but it is ultimately an arms race between Amazon and the merchants and my impression is that for many years Amazon was losing.

It is amusing that they're ending it. I never heard how things were going after I left, but had the impression externally that it was ending up being a disaster, and knowing how it works on the inside it's not a surprise. In hindsight trusting FBA sellers to not become essentially malevolent actors seems comically naive.

While high value resale brands like Apple and GPU manufacturers would be the obvious choice here, I’d be tickled if it was LEGO Group that finally forced their hand, given how many stories there are of people receiving faked parts, missing mini figs and straight up bags of pasta.

The best we can hope for is a world where Amazon faces real financial pressure to prevent counterfeits. Thus far I haven’t seen much evidence this was happening, but this is a welcome sign.

That’s not cynical, that’s the system working. And if you keep bringing your money, you are signaling it’s a little annoying but not it’s ultimately ok.

I can't count the number of times I've ordered a book from Amazon (1st party, Amazon as the seller) and received an obvious counterfeit, with fuzzy text and a poorly printed cover. On one occasion, the scanning/OCR process had missed most of one chapter, so there were just section headers, page numbers and blank pages.

Unfortunately publishers and manufacturers don't have a lot of leverage with Amazon. If there's pressure coming from somewhere, it must be coming from a regulatory body.

I'm not sure if it is fraud, but it definitely aided and abetting counterfeiters, and I think it is a travesty that Amazon has not been fined for it. I also actively avoid buying from Amazon partly because of this (and this decision will make no difference; I have no interest in patronizing a company that does this, unless I see some repentance), although there really isn't anyone else for a lot of items.

[1] https://www.wsj.com/articles/amazon-has-ceded-control-of-its...

This means malicious sellers can deliver literal counterfeits to warehouses and externalize the consequences, down to angry 1-star reviews and disposal of returned counterfeit examples, to somebody else.

You could wonder if the distributor is commingling. Milk production, probably. They’re taking responsibility for the quality of the final product, though.

For one thing, the grocery store is deciding what produce to stock and what suppliers to get it from. They can choose suppliers that have at least a minimum standard of quality. They don't just let anyone on the world slap a barcode on anything at all, claim it's a grapefruit, and put it into their stores.

For another, a large fraction of produce (though not all) is bought in person, and customers can see if it's obviously bad quality before buying it, unlike Amazon where all you have to go by is the product listing for the SKU.

Grocery stores have distribution trains from trusted vendors, with QC and regulatory oversight to defend them against the liability they are subject to if they sell a harmful product.

Source; a career in higher education where I've seen most publishers entice faculty to use proprietary platforms so students have to pay hundreds for ebooks.

Surprisingly, the number of products that needed such a return was extremely low.

Although actually upon reflection, it doesn't say that they won't send out co-mingled products, this isn't a notice to customers that they won't send out fakes after that date. Just that they won't co-mingle anymore.

With Googling the "figure out what is going wrong" part of solving the problem is more decoupled from the "figure out where to buy this thing" part. The first part involves Googling, looking at a bunch of results, finding a lot are not relevant, trying to refine the search, and repeating probably many times. After that time consuming process when I have finally decided that I needed a new cable I'd probably just go to Amazon without thinking about it.

I always have a little doubt when buying from Amazon because of commingling, but usually not enough to look deeper into it unless the product is something with a high risk of it.

With the LLM instead of Google I upfront described to it a lot of details of my equipment, how I was using it, what symptoms I was seeing, what diagnostic steps I'd taken and the results of those, and why I believe certain things that could cause such problems would not be applicable in my case.

It then finds all the stuff I would have found by Googling, but because it also has way more information from what I told it at the start it can eliminate a whole bunch of the irrelevant results, so I'm starting out way ahead of where I would be after a first Google. A little back and forth and I know what I need to buy.

At that point I'm still at the LLM screen. Since it is right there tossing in a final question about buying from Amazon vs Best Buy is trivial.

I'm not a frequent LLM user. I have yet to pay for any LLM. (I did have a year of free Perplexity Pro that Xfinity gave to its customers a little over a year ago, but when that expired I did not subscribe.

(There's a funny story there--when it expired and they tried to convince me to subscribe, I asked Perplexity if a subscription would be worth it. It told me that considering my usage patterns the free plan was perfectly fine for me and I should stick with that).

A lot of people now are using LLMs instead of or before traditional Google-style searches when they want information. Not just techies or early adopters. The are or are quickly becoming mainstream.

If they are recommending not buying from Amazon that might be something Amazon would want to address.

And sometimes, common knowledge may be wrong, so it doesn't hurt to use LLMs, search engines and other sources to confirm that. Maybe you could discover that Best Buy has a problem with just the product you want, or any other reason. It doesn't hurt to spend a couple of minutes to double check and avoid losing $70.

And with some electrical stuff, such as power strips and chargers, there might be safety issues/fire hazards too.

Placed the order on their website, using their payment processing.

Delivered in an Amazon box by Amazon.

It was cheaper on Amazon as well. So I guess the joke is on me.